Adjustable brake-head.



H. B; RQBISYGHUNGL ADJUSTABLE BRAKE HEAD.

APPLID'ATIOH FILED MAY l, 108.

@s 9E n DEM@ Pawnee@ News@ in: Se j im'enen whites fie new andfusel mgowmelxt le acwsable @fieke heads of iin-rt' @hereafter Sinnen 1n United States Let tem'znzeut X0. granted te me N4 For msa-nee, sure is apphed i0 Jhe beam hmugh the he he arrowPthe spa-3e vers in Athe fieotion of t up before pressure can be 'applied t0' 'This space a, regfrdess Ehe bzlke Shoes. of he'w email or howlarge it mgh bef 1S l multped :many times Roms- L baci;

of ge brake eymderand the 'pieten l sere of the spngg-peeeeed baking .black egg- El eree' mersmn feature moie eleel'y might pezshagps we to say tha the brake beam is hung usually by brake henges Wxe-l are feeeved in appmpfa'e epenings lb, in FigEL if 'whereby the Wefght the br: ke beam and its Cezmeee Bieke l vers accofding o t zkfesed paient, Whe is dagzizmeacay imsmeted'u 6, is sfrppelte by he Spying behind *31e eekng block, Whese p'estended 'fm suppmhis weight, and "xhe Y xvelght eff the brake beam am? :its levees 1S @ne (if he objeets of my presen ev'een te s@ oete the' Spring housing en *che brake heaf that the pyessure of the sperug behind the leckglg sueh a recw'ien Jehat the deal-ance gpaee in the nature of moten #o be censumed in eppyng he brakes will be rencedfr elimimated eniely, depending upon the lmet-ion of the apped spring pressure represented by the aa'lsow S in Figs'. 7 to 9 'ncusive.

By refer'ng to Fig?? it W be observed het by heating the spring pressure as nfcated by he www S behd be position in which it isleeated in Fig, 6Y er approxisure is inficaei by he' zuow S' The l Springs behm fhe bekmg Mock are 12b 90 e dezubleek will be eppecl in mately at a point coincident with the central line C under the brake beam, the clearance space a has been decreased somewhat.

By referring to Fig. 8 it will be seen that by locating the spring pressure, indicated by the arrow S, immediately behind the brake bea-m, approximately coincident with -the line B, lost motion of space o `is entirely eliminated from in front of the brake beam and is located behind the brake beam where it does not have to be taken into consideration in applying the'brakes. The location of the spring-pressed locking -block with its pressure| indicated by the arrow S coincident with the line B is an ideal condition tar as eliminating lost motion occasioned by the space a is concerned, but due to restrictions in space and other practical conditions it is not possible to arrange the housing containing the locking block and its spring at substantially right angles to the lbrake head, as shown in Fig. 4, although it is highly desirable to do so where practical conditions such as ample room in hanging the brakes permit of this arrangement.

Another obj ect of my invention is to locate the spring housings at some point above the brake beam, as .tor instance between the lines -A and B, Figs. 7 to 9, so that the thrust block or part of the brake beam passing through the brake head will rest in the lower portion of the 'socket in the brake head to prevent rattling and wear, which have a tendency to increase lost motion.

By referring to Fig. 6 it will be observed that the arrow S .indicates the tendency 'ot' the spring behind the locking block to siip port the brake beam and its carried brake levers. ln F ig. 7 this tendency is eren greater than in the construction shown in Fig (3;. while in Fig. t. where the pressure is applied behind the brake beam (the ideal position to eliminate lost motion ot' space at), there is still left an appreciable clearance space I; between the underside ot the thrust. block and the brake head.

As conditions connected with the use oft this particular type of brake beam demand the use of a circular thrust block, and as it is desired to not only reduce the lost motion space a to the point of elimination it possible, but to likewise red-ucc,clearance space 7 lo substantially a point oit elimination, it follows` that the best location of the springpressed locking block is diagrammatically illustrated in Fig. 9, where both the spaces a and Z) are practically eliminated. ln this figure it will be noted that the direction ot' spring pressure coincides with the arrangement of the spring housings in Figs. 3 and 5, which are mounted upon brake heads having ditt'ereut throws.

Where the rattling oi" the brake beam in the head is a matter of import and it is desired to e'linrinat': *his Eeature regardless of the lost motion occasioned by space a, the arrangement shown in Fig. l' can be employed; and where it is desired to entirely eliminate the lost motion without regard to the rattling of the brake beam in the head, the arrangementshown in Fig. 4t can be employed. The structures shown in Figs. 3 and 5 embrace a compromise arrangement where the clearance 'spaces a and b are practically eliminated.

Another object of my invention is to provide a xed lug on the brakehead and extending into the socket of the same, Which lug tits between the flanges or head of the thrust block, and in the event of breakage of the spring behind the locking block 01 for other reasons ,which occasion the dis )lacement of the locking block, will hold the rake p head in-position on the beam. Heretofore .the locking block has been relied upon to hold the head on the beam, but where the spring became broken or for other reasons the lockingblock became displaced, the head be turned to an abnormal position, in whichposition the lug would register with the groove, which would be not at all likely.

In the drawings, 1 indicates the brake head whose and lugsv are preferably constructed to conform'to the Master Car Builders standard, which brake head is provided With a socket 2- for receiving the thrust block or brake beam, as the case may ings as being circular, but it is obvious that the shape of the socket has nothing to do with my invention, ast-he socket may be of such shape as to conform to the requirel have shown this socket, in 4the draw` ments of the beam into which the head. is

applied.

ln vFigs. l, and 2, 3 indicates the thrust block in which are received the compression member L1 and the tension member 5 of the brake beam, the latter being threaded and having a nut 6 on its end, which nut impinges against the thrust block This thrust block is provided with a series of teeth 3a for cooperating with a. springpressed block 7 mounted in the spring housing 1 of the brake head. A spring 8 bears against this block, and a bolt 9 passing through the lspring and having its head engaging the spring-pressed block, is prefer ably rovided with a nut l0 on its end Where y when it is desired to retract the springpressed block for the purpose of adjusting the head on the beam or removing l ibe- MM a Each; 3E i@ auf spam e ik@ swing range@ *s* m as f :x brake, be;

taking @wir 'pneventxng um @i #ne haar? the the sentii' of @he X30 beam to prevent rattling between the parts; substantially as described'.

8. The combination of a brake beam, a brake head mounted thereon and provided with a pocket, a locking block yieldingly mounted in said pocket. said locking block being located above the lowest point of said brake beam; substantially as described.

9. A brake head having a socket and a locking block pocket opening into said socket, which pocket is above the horizontal line through the center ot the socket; substantially as described.

l0. A brake head having a socket and a locking block pocket opening into said socket, which pocket is located at a point to the rear of the central line vertically through the socket; substantially as described.

A11. A brakehead having a socket and a locking block pocket opening into said socket, which pocket is located at a point rearwardly between a central line vertically, and above a horizontal line with respect to said socket; substantially as described.

l2. A brake head provided with a pocket tor a yielding locking block, said Apocket being located above the .center line of the head; substantially as described.

13. A brake head provided with a pocket t'or a yielding locking block, said pocketbeing located behind the vertical cent/er line through the head; substantially as described.

V1.4. A brake head provided 'with a yielding locking device and having an integral locking lugextendinor into its socket; substantially as described.

l5. 'lhe combination ot' a brake beam and a brake head connected thereto by means ot a bayonet lock and means for holding the head in adjusted positions on the beam; substantially as described.

lo. The combination ot' a brake beam, and a brake head, one of said parts having a mutilated llange, and the other ot said parts having a lug adapted to pass through the mutilated portion of the ll'angc, whereby when said parts are assembled by relative longitudinal movement and a lateral movement they are locked against` longitudinal displacement and means .for holding the head i-n adjusted positions on the beam 5 substantially as described. l

17. The combination of a bralie beam hava flanged end ii'icnibei, the outside tlange ing of which is provided with a notch, a brake head having a lug extending into the st eket which receives said flanged end nnanber,

said lug being passed through said'l notch' whereby the pai-ts are capable of beingy locked together by a bayonet locking movenient; substantially as described.

19. thrust block for brake beams having a pair ot tlanges, one ot said flanges be ing provided with a notch; substantially as described.

20. The combination of a bralrebeam, a

-lirakeliead adapted to tit and turn on said brake-beam, a bayonet-joint connection between said brake-head and brake-beam, and means to clamp said brake-head on said' beam to maintain the same in adjusted angular position, substantially as described.

2l. The combination of a brake-beam, a sleeve on the end of said brake-beam, a brakediead adapted to tit and turn on said sleeve, a bayonet-joint connection between said brakedi'ead and sleeve, and 'means to clamp said brake-head on said sleeve to maintain the head in adjusted angular position, substantially as described.

22. The combination vof a brake-beam, a cylindrical sleeve on the end of said beam, said sleeve havingl on its exterior surface a curved groove extended transversely thereof, and having one or more entrance grooves communicating therewith and extended to the rnd ot' the sleeve, a brake-head with an internal projection adapted to enter and coact with the walls otl said curved groove to prevent. lengthwise shitting of the head on the sleeve, and means to clamp ysaid head on said sleeve to maintain the head in adjusted angular position, substantially as described.

ln testimony whereof I hereunto alibi my signature in the presence of two witnesses, this lourth day olf May1908.

HICN RY B. ROBISCHUNG.

\Vit uessc's: i

Finn). E. GnisoN, il. Limena.

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